MS Power Point
To change font size of a selected slide title, you:

Click Title, New Font, OK
Click Format, Title and choose a font from the font tab
Click the toolbars Font dropdown arrow and choose the font you prefer
Click the toolbar’s Increase Font Size button

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MS Power Point
To insert slide numbers

Choose Insert >> Slide Number
Insert a text box and select Insert >> Page Number
Insert a textbox and select Insert >> Number >> PageNumber
Insert a new text box and select Insert >> slide Number

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